Can-cover-lining machine



Patented Sept. 13, 1921.

s SHEETSSHEET 1.

5 nge'ntoz J. BRENZINGER.

CAN COVER LINING MACHINE. APPLICATION FILED APR. 22, I919- RENEWED JAN. 31.1921.

PatentedSept. 13, 1921.

3 SHEETS-SHEET 2.

HIV?

3 nwntoz u %1) 011141241 v f0- J. BRENZINGER.

CAN COVER LINING MACHINE.

APPLICATION FILED APR. 22, I919" RENEWED JAN. 31,1921.

1,890,491. PatentedSept. 13,1921..

3 SHEETS-SHEET 3- UNIT JULIUS BRENZINGER,.OF ramrmtn, CONNECTICUT.

.cAN-covna-Lmmci mnonmn Specification of Letters Patent.

Patented Sept. 13, 1921.

Application filed April 22, 1919, Serial No. 291,905. Renewed January 31, 1921. Serial No. 441,454.

To all whom it may concern:

Be it known that I, JULIUS BRENZINGER,

. a citizen of the United States, residing at Fairfield, in the county of Fairfieldand State of Connecticut, have invented certain ne'wand useful Improvements in Can- Cover-Lining Machines, of which the following is a specification.

"In packing food stuffs and other perishable products in what are generally known as tin cans, it is obviously necessary that the container, when packed and headed, be ab: solutely air-tight. V In the old type of soldersealed cans, the exercise of a little care and the use of a sufficient quantity of solder insured, with a reasonable degree of certainty, hermetic joints. Demand for a solderless container brought into existence the so-' called sanitary l can, in which the ends or heads are securedto the body portion of the can b inter'curling and compressing flanges on t ese parts, an operation commonly known as doubleseamingf Slight and unavoidable imperfections and irregularities in the metal, and other causes, render it-exceedingly difficult to form an air-tight double seam without the use of a suitable packing, and it therefore came ,to be the practice to deposit upon one of the flanges to be intercurled a liquid or semi-liquid compound, self-hardening to rubber-like con- 1 sistency, which'provides the necessary packing and insures an hermetic joint.

This compound is generally applied tothe' flange of the head or cover, and is deposited thereon in different ways. Mostf common, probably, is the process of turning the cover around underneath a nozzle through which a small stream of the compound is being discharged. Another process is that of causing rotation of the cover with its edge in contact with a roller upon which a film of the compound has been deposited, whereby a proper amount of the compound is scraped from the roller and deposited on the edge of the coverflange. Undoubtedly, both processes are fairly effective, but each is subject to objection. It is. obviously undesirable that any 1 of the compound be so deposited, either as to location or quantity, as toibe within the .can when it has been packed and sealed. Not

only is it difficult to regulate the stream discharged from a nozzle, due to variations in the consistency of the compound andin the pressure appl1ed to discharge the same, but

the nozzle is likely to and'often does become clogged, particularly during a temporary suspension of operations. Therefore, the quantity delivered is sometimes insufficient and unevenly deposited and sometimes excessive, in one'case resulting in the 'forma-' tion of an imperfect seam and in the other resulting in a portion ofthecompound being squeezed into the interior of the can durin the double seaming operation.

hen the cover is manipulated to scrape the compound from a rotating roller, it is obvious that the compound will be deposited along'the extreme edge only of the coverflange. In packing what are known as high process goods, which include almost all vegetable food stuffs, where perfect sterilization is essential, the packed and sealed can is subjected to a temperature of from 240 to 250, Fahrenheit, for a period of several hours." This means a continuous internal pressure of from 15 to 20 lbs., and when the packing compound has been deposited along the extreme edge only of thecover-flange, being more or less softened by the heat, a portion or portions thereof are likely to be and he uently are blown out during the process 0 sterilization. I

The cover-flange is generally partially curled or turned when the cover is stamped from the blank, forming a shallow peripheral move or gutter. It has been found that or best" results the packing ring should be initially positioned in the bottom of this groove or utter. Being so positioned, if the amount 0 the compound deposited is not excessive, no portion of it 'can be squeezed into the interior of the can during the seaming operation nor be blown 'out durin the process of sterilization. The principa object of the present invention is the provision of a machine for applying a seam-packing composition to cancovers inigproperly regulated quantity along the bottom only of the peripheral groove or gutter of the cover,

,the "compound is applied to the cover-flange in a manner which permits of the use of a composition of such character that it does not have to-be heated to reduce it to and retain it in a liquid or semi-liquid state; and that of the provision of a machine in which a compound of initially relatively denser consubstantially on the broken line 2-2 of Fig. 1; v

Fig. 3 is a transverse vertical section, taken substantially on the line 3-3 of Fig. 1, and Fig. 4 is an enlarged central sectional detail view of a can-cover and the lower ends of the telescoping plungers, hereinafter described, just after the depositing operation.

Referring now to the drawings in detail, numeral 7 designates a heavy casting which provides a suitable frame supported from the floor by means of standards 88. The top plate of this casting 7 is provided with a substantially central depression 9 which provides a support and bearings for the collar 10 fixed on the vertical shaft 11, which also has bearings in the boss 12 on the crossbar 13 of the frame. At the top of the shaft 9 11 is mounted a turret, in the form of a cross, providing the four radially-disposed arms 14, 15, 16 and 17 which revolve with the shaft 11.

At the end of each of the arms 14, 15, 16 and 17 is mounted what may be termed a double plunger, comprising an exterior plunger 18 the tubular shank 19 of which is slidable in suitable bearings at the end of the arm, and an interior plunger 20 the shank 21 ofwhich is slidable within the tubular shank 19 of the plunger 18. The

plunger or plunger-head 18 is of inverted cup shape, and the plunger or plungei -head 2O fits snugly therewithin, normally projecting slightly therefrom a's shown on the right-hand side of Fig. 3, in which position.

it is yieldingly heldby means of the coil spring 22 in compression between the plunger-head 20 and the shoulder provided by the recess 23 in the plunger-head 18.

The plunger 20 is rotatively supported by means of a roller 24--the further function of which will be hereinafter explained fixed on the shank 21 above the end of the shank 19: of the plunger 18. The plunger 18 is rotatively carried at the end of a lever 25 pivoted or fulcrumed in the boss 26 with which each of the arms 14, 15, 16 and 17 is provided, said lever terminating in a yoke 27 each arm of which is slotted for the reception of pins 28 28 on a collar 29 loosely seated in a groove in the shank 19, a common and well-known expedient. At the other end of each of the levers 25 25 is provided a yoke 30 the arms of which are slotted for the reception of pins 31 31 at the upper end of a rod 32 which is slidable vertically in bearings in the arm (14, 15, 16 or .17) on which the lever 25 is mounted and in the collar 10 on the shaft 11. A coil spring 33, interposed between a fixed collar 36 on the rod 32 and a shoulder provided by the recess 37 in the lever-carrying arm, serves to yieldingly retain the plungers in raised or elevated positions.

At one side of the top plate of the frame 7, 1 form a depressed portion 38 for the reception of a tank 39, adapted to contain the liquid or semisliquid composition to be applied to the cover-flanges. The main driving shaft 40, which will be hereinafter described, passes through this tank 39, having suitable bearings in the sidewalls thereof, and on this shaft 40 is mounted the roller 41, adapted to dip into the liquid 42 in said tank, as shown in Fig. 3. Thelocation of the shaft 40, the diameter of the roller 41, and the normal vertical position of the'plunger-head 20 are all so relatively adjusted that when the arms 14, 15, 16 and '17 are revolved by the shaft 11, each plunger-head 20 in turn is brought over the roller 41 with its edge immediately above the upper face of the roller. v I

The main driving shaft 40, to which I have. hereinbefore referred, is journaled in suitable bearings provided in the frame 7 and may be driven in any desiredmanner, as by a pulley 43 thereon having the usual connection with a source of power. Mounted on the shaft 40 isa bevel-gear 44 in mesh with a corresponding gear 45 on the horizontal shaft 46. At the other end of the shaft 46 is,-mounted the bevel-gear 47 in,

mesh with a corresponding gear 48 on the short vertical, shaft 49. At the lower end of the shaft 49 is mounted the disk wheel 50 and at the lower end of the shaft 11 is mounted the star-wheel 51, the two makingup the well-known Geneva-stop movement.

I have shown the disk-wheel 50 provided- On the top plate of the frame 7, opposite the roller 41 and underneaththe path of movement ofthe plungers, I provide a seat for a can head or cover 57, preferably by mounting on said plate a ring or apertured disk 58, as shown. The Geneva-stop movement is so adjusted that when the shaft 11 is in a condition of rest, one of the plunger mechanisms described will be located above the roller 41, in position to be depressed against said roller to scrape therefrom a ring of composition, while the opposite plungermechanism will be located immediately above the cover-seat 58. It is to be understood that the diameter of the plunger 18 is such that the rim of the inverted cup-shaped portion thereof, upon depression, will enter the groove or gutter 59 at the edge of a cover for astandard size of can, said cover being in inverted position, as clearly shown in Figi 4.

ounted at the end of the power shaft 40 is a bevel-gear 60in mesh with a corresponding gear 61 on the horizontal shaft 62. At the other end of the shaft 62 is mounted the cam-wheel 63for independently oscillating the horizontal shaft 64 and the sleeve, 65 loose thereon. Fixed upon the shaft 64 is the arm 66, so positioned and adjusted that when the shaft 11 is at rest the lower end of one of the rods 32 is immediately above roller at the end of a lever 71 fixed upon the shaft 64. In the other face of the camwheel is" provided a cam-groove 72 (dotted lines in Fig. 2) into which projects the usual roller at the end of a lever 73 fixed upon the sleeve 65. The cam-groove 70 directs movementof the lever 71 to a comparatively slight extent, merely sufficient to depress the plun er 20 until it contacts with the roller 41 without relatively depressing-at least to anymaterial extent-the plunger 18. The cam-groove 72, however, is of such configuration as to impart to the lever 73 a longer stroke, in this case causing depression of the plungers with the effect, first, of seating the solid interior plunger against the head or cover 57, which has been placed in or delivered to the seat 58, and then continuing downward movement of the plunger 18 against the action of the spring 22, completely telescoping the plunger 20 and scraping therefrom the ring 74 of the lining compound which is then pressed into the groove on utter 59 of the head or cover, substantial y along the middle line of the bottom thereof, as clearly shown in Fig. 4:" The covers 57 are each placed in or delivered to the seat 58 in a heated condition, wherefore,

the plungers and the composition being com' paratively cooland it will be noted-that the plungers have ample time for cooling be tween operations at the cover-lining sta- B5 tion'th packing ring will adhere to the change of direction.

the anti-friction roller67 mounted at the mounted on the frame 7, around which passes the rope-belt 7 9,'idlers 80 and 81 being interposed to provide for the necessary On the short shaft 77 is mounted the roller 82 so positioned thatwhen each plunger mechanism is brought over the feed-roller 41, the roller 24 mounted on the shank of the plunger 20 and said roller 82 will be brought into contact with each other and the former be frictionally rotated by the latter to rotate the plunger 20- as it is depressed against the roller 41.

The plunger 20, with its ring 74 of lining compound thereon, having been raised from the feed-roller 41, is first carried by the revolving arm to an idler station and then to the lining station wlmr the ring is positively delivered 'to proper position in the cover groove or gutter in the manner described, during which time the compound will have become of denser consistency through evaporation.

Many modifications of minor details of my improved can-cover lining machinev will doubtless readily suggest themselves to those skilled in the art to which it appertains, and I therefore do not desire to limit, my invention to the specific construction herein shown and described.

I claim:

- 1. In a can-cover lining machine, the combination, with means for forming and holding a gasket of semi-liquid material, of means for subsequently depositing said gasket around the edge of a can-cover.

2.' In a can-cover lining machine, the combination, with means for forming and hold-- ing a gasket of semi-liquid material, of means subsequently operable to positively deliver said gasket to and position the same around the edge of a can-cover.

3. In a can-cover lining machine, the com bination, with means for forming and holding a gasket of semi-liquid material, of means for subsequently depositing the formed gasket in the peripheral groove of a bination of a carrying form, means for destation.

6. In a can-cover lining machine, the combination of a carrying form, means for dellvering thereto and forming thereon an adhering ring of semi-liquid lining compound,

means for conveying said form to a lining station, and means for positively delivering said ring to and positioning the'same around the edge of a can-cover at said station.

7. In a can-cover lining machine, the combination, with a rotating roller and means for delivering to the cylindrical face thereof an adhering coating of semi-liquid material, of a carrying form, means for rotating said form with the edge thereof in contact with said roller to scrape therefrom a formed gasket of said material, means for conveying said form to a lining station, and means for depositing said gasket around the edge of a can-cover at said station.

8. In a can-cover lining machine, the combination, with a rotating roller and means for delivering to the'cylindrical face thereof an adhering coating of semi-liquid material, of a round carrier, means for rotating said carrier and simultaneously bringing the edge thereof into contact with said roller to scrape therefrom a ring of said material, means for conveying said carrier to a lining station, and means for depositing said ring around the edge of a can-cover at said station.

9. In a can-cover lining machine, the com bination of a plurality of intermittently traveling carrying forms, means for delivering to and forming on each thereof in turn while in a condition of rest an adhering ring of semi-liquid lining compound, and means for depositing the ring on each form successively around the edge of a can-cover.

10. In a can-cover lining machine, the com bination of a series of carrying forms mounted to revolve in a common orbit, means for intermittently revolving said forms, means for delivering to ,and forming on each thereof in turn while in a condition of rest an adhering ring of semi-liquid lining compound, and means operating coincidently with said last-mentioned means for depositing the ring on a preceding form around the edge of a can-cover.

' 11. In a can-cover lining machine, the combination, with a rotating roller and means for delivgring to the cylindrical face thereof an adhering coating of semi-liquid material, of a plurality of intermittently traveling carrying forms, means for rotating one of said forms when in .a condition of rest With the edge thereof in contact. with said roller to scrape therefrom a formed gasket of said material, means for conveying said forms successively to a lining station, and means for depositing the gasket on each form successively around the edge of-a cancover at said station.

12. In a can-cover lining machine, the combination, with a rotating roller and means for delivering to the cylindrical face thereof an adhering coating of semi-liquid material, of a plurality of intermittently traveling round carriers, means for rotating one of said carriers when in a condition of rest and simultaneously bringing the edge thereof into contact with said roller to scrape therefrom a ring of said material, means for conveying said carriers successively to a lining station, and means for depositing the ring on each carrier successively around the edge of a can-cover at said station. f

13. In a can-cover lining machine, the combination, with a rotating roller and means for delivering to the cylindrical face thereof an adhering coating of semi-liquid material, of a series of carrying forms mounted to revolve in a common orbit, means for intermittently revolvingisaid forms, means for rotating one of said forms when in a condition of rest with the edge thereof in contact with said roller to scrape from the latter a formed gasket of said material, and means operating coincidently with said last-mentioned means for depositing the gasket on a preceding form around the edge of a can-cover.

14. In a cam-cover lining machine, the combination, with a rotating roller and means for delivering to the cylindrical face thereof an adhering coating of semi-liquid material, of a series of carriers mounted to revolve in a common orbit, means for intermittently revolving said carriers, means for rotating one of said carriers when in a condition of rest and simultaneously bringing the edge thereof into contact with said roller to scrape therefrom a ring of said material, and means operating coincidentally with said last-mentioned means for depositing the ring on a preceding carrier around the edge of a can-cover.

15. In a can-cover lining machine, the combination of a carrying form, means for delivering to and forming around the lower edge thereof an adhering ring of semi-1i u1d lining compound, means for conveying aid form to a lining station, and means for depositing said ring around the edge of a cancover at said station, said last-ment1oned means comprising a hollow plunger in telescopic arrangement with said form. s

16. Ina can-cover lining machine, the" combination of a plurality of intermittently traveling carrying forms, means for deliv ering to and formingaround the lower edge:

of each thereof in turn while in a cbndition of rest an adhering ring of semi-liquid lining compound, and means for depositing the ring on each form successively around the edge of a can-cover, said. last-mentioned means comprising aJhollow plunger in telescopic arrangement with .each of said forms.

17. In a can-cover lining machine, the combination of a plurality of intermittently traveling carrying forms, means for delivering to and forming aroundthe lower edge of each thereof in turn while in a condition of rest an adhering ring of semi-liquid linlng compound, means forconveying said forms successively to a lining station, and means operating coincidently with said delivering and forming means for depositing the ring on a preceding form aroundthe edge of a can-cover at said station, said means comprising a hollow plunger in telescopic arrangement with said form.

18. In a can-cover. lining machine, the combination of a'series of carrying forms mounted to revolve in a common orbit,

means for intermittently revolving said.

forms, means for delivering to and forming around the lower edge of each thereof in turn while in a condition of rest an adhering ring of semi-liquid lining compound, and means operating coincidently with said delivering and forming means. for depositing the ring on a preceding form around the edge of a can-cover, said last-mentioned means comprising a hollow plunger in telescopicarrangement with'each of said forms. 19. In a can-cover lining machine, the combination, with a rotating roller and means for delivering to the cylindrical face thereof an adhering coating of simi-liquid material, of a carrying form, means for rotating said form with the edge thereof in contact with said roller to scrape therefrom a formed gasket of saidmaterial, means for conveying said form to a lining station, and means for depositing said gasket aroundthe edge of a can-cover at said station, said lastmentioned means comprising a hollow plunger in telescopic arrangement with said form. Y

20. In a can-cover lining machine, the combination, with a rotating roller and means for delivering to the cylindrical face thereof an adhering coating of semi-liquid material, of a round carrier, means for ro-' tating said carrier and simultaneously bringing the edge thereof into contact with said roller to scrape therefrom a rin of said material, means for conveying sai carrier to a lining station, and means for depositing said ring around the edge of a can-cover-at said station, said last-mentioned means comprising a hollow plunger in telescopic arrangement with said carrier. 21. In a can-cover lining machine, .the combination, with a rotating roller and form to a lining station,

means for delivering to the cylindrical face thereof an adhering coating of semi-liquid material, of a plurality of intermittently traveling round carriers, means for rotating one of said carriers when in a condition of rest and simultaneously bringing the edge 'thereof into contact with .said roller to scrape therefrom a ring of said-material, means for conveying sa 1d carriers successively toa hning station, and means for depositing the; ring on e-ich carrier successively around the edge of 'a can-cover at said station, said lastmentione'd means comprising a hollow plunger in telescopic arrangement witheach of revolve in a common orbit, means for inter-1.

mittently revolving said carriers, means for v rotating one of said carriers when in a condition of rest and simultaneously bringing the edge thereof into contact with said roller to scrape therefrom an adhering ring of said material, and means operating coincidently with said ring-forming means for depositing the ring on a precedingcarmer around the edge of a can-cover,sa1dlastmentioned means comprising a hollow plunger in telescopic arrangement with each of said carriers.

23. In a can-cover lining machine, the combination of a carrying form, means for delivering to and forming around the lower edge thereof an adhering ring-of semi-liquid lining compound, means for conveylng said and means for depositing said ring around the edge of a cancover at said station, said last-mentioned means comprising a hollow plunger in telescopic arrangement with said form and operating means which first seats said form on the cover and then actuates said plunger.

deposit the same around the edge of an' un .derlying can-cover.

25. In a can-cover lining machine, the combination, with an intermittently rotating turre t, ,.a series oi vertically reciprocable forms carried thereby, and a reciprocable hollow plunger --'in telescopic arrangementwith each of said-forms, of means 24. In a can-cover lining machine, the t for rag" delivering to and forming on each of said forms successively While said turret is in a condition of rest a gasket of semi-liquid material, and means operable coincidently With the gasket-forming operation to first depress an advanced form and then depress the plunger thereon to scrape the gasket from the form and deposit the same around the edge of an underlying can-cover.

26. In a can-cover lining machine, the combination, with an intermittently rotating turret, a series of vertically reciprocating and yieldingly supported forms carried thereby, and an independently reciprocable hollow plunger in telescopic arrangement I with each of said forms, of a rotating roller, means for delivering to the cylindrical face thereof an adhering coating of semi-liquid material, means for rotating one of said forms when in a condition of rest with the edge thereof in contact With said roller to scrape therefrom an adhering ring of said material, and means operating coincidently with said ring-forming means to first depress an advanced form and then depress the plunger thereon to scrape the ring from said form and deposit the same around the edge of an underlying can-cover.

In testimony of the foregoing, I have hereunto set my hand in the presence of two witnesses.

JULIUS BRENZINGER. Witnesses:

C. B. WALwoR'rH, TIMOTHY A. Eieo. 

